Table 1 Input parameters to the model
Predictor name | Description | Generation method | Range |
|---|---|---|---|
MF utilization | CPU utilization while operating at the median frequency rang | Variable polling with OS counters | 0–1 |
HF utilization | CPU utilization while operating at the high frequency range | Variable polling with OS counters | 0–1 |
Screen on | Fraction of time screen was on | Broadcast receivers | 0–1 |
Screen brightness | Average screen brightness | Variable polling | 20–255 |
Call ringing | Fraction of time smartphone was ringing | Broadcast receivers | 0–1 |
Call off-hook | Fraction of time smartphone was in call | Broadcast receivers | 0–1 |
Data on | Fraction of time smartphone was connected to some mobile network | Broadcast receivers | 0–1 |
Data traffic | Average number of bytes sent/received through mobile network per second | Variable polling with OS counters | ≥0 |
WIFI on | Fraction of time phone is connected to some WIFI network | Broadcast receivers | 0–1 |
WIFI traffic | Average number of bytes sent/received through WIFI interface per second | Variable polling with OS counters | ≥0 |
SD traffic | Average number of sectors read/written per second | Variable polling with OS counters | ≥0 |
Audio on | Fraction of time audio device was active | Broadcast receivers | 0–1 |
GSMRSSI | Average mobile received signal strength indication | Broadcast receivers | (−113)–(−48) dBm |
NET HSDPA | Fraction of time mobile connected to HSDPA network (3G) | Broadcast receivers | 0–1 |
NET EDGE | Fraction of time mobile connected to EDGE network (2.5G) | Broadcast receivers | 0–1 |
NETGPRS | Fraction of time mobile connected to GPRS network (2G) | Broadcast receivers | 0–1 |
GPS on | Fraction of time GPS adapter is on | Broadcast receivers | 0–1 |